Patent GB-779582-A (GB)
Title: Improvements in or relating to building elements
IPC: E04C2/34
Filed: 1954-02-11
Abstract: 779,582. Walls; lathing; building elements. BURGESS D.C. May 11, 1955 [Feb. 11. 1954], No. 4115/54. Classes 20(4) and 87(1) A building element comprises two sheets of lathing material, 16, 17, Fig. 6, interconnected in parallel spaced relationship by a sheet of expanded metal 11, Fig: 1, which is folded along parallel lines passing through the junctions of the strands thereof, the folded junctions being rigidly connected to the spaced sheets 16, 17 on opposite sides of the sheet 11. The sheet 11 is bent to form a zig zag corrugated expanded metal sheet, the junctions of the strands being welded to two thin sheet metal plates 12, 13, the latter being formed with outwardly pressed dimples the crowns of which are perforated so that the junctions are exposed. As shown a row of channel section strips 14 is applied over the plate 12, each strip being welded to the exposed junctions of the expanded metal sheet 11 with the plate 12, a similar row of channel section strips 15 being applied over the plate 13. Two flat sheets 16, 17, of expanded metal are then applied respectively over the two rows of strips 14, 15, being welded to these strips at intervals Metal channels 18, 19 are welded to the vertical sides of plates 12, 13. The top and bottom edges of plates 12, 13, have welded thereto metal sections 24, 25, Fig. 4 which have deep re-entrant folds 26, 27 respectively. In securing a slab of concrete 41 constituting a floor and ceiling structure between a pair of elements a plate 43 is bolted to the end of the slab 41 and has upwardly and downwardly projecting marginal portions 42<SP>1</SP>, 42<SP>11</SP>, which engage the folds ,26. 27. Bolts having heads 21 are passed through spacing sleeves 23<SP>1</SP> to secure the assembly. To secure one element vertically above another without the interposition of a 'slab 41, a double folded plate is employed which engages the folds 26, 27. In securing an element to a floor, a strip having a ridge to engage the fold 27, is bolted to the floor, a damp course being interposed between the strip and the floor. Two elements may be joined end to end with a third element at right angles thereto as shown in Fig. 6. A connecting plate 46 is clamped between the bolt heads 21 of the two end to end elements, a part 45'of plate 46, filling the wedge shaped gap between the elements. Angle irons 47, 48, clamped between the appropriate bolt head 21, or nut 22, hold the element  at right angles. Plaster or cement coatings 48, 49, are applied over the expanded metal ,sheets 16, 17. In a modification the channel section strips 14, 15, are replaced by vertical rods, and the sheets 16, 17, are replaced by horizontal rods. Such an element may be provided with concrete slabs on both sides prior to erection. The elements may be filled with heat or sound insulating material, such as vermiculite or foamed concrete. An embodiment is described in the Provisional Specification in which the elements are separated by reinforced concrete posts cast in situ. Also the edge strips 18, 19, 24, 25, may be omitted, the margin of one of the expanded metal sheets being bent to form a flange which is subsequently plastered.